Mark 10:6 YLT

⁴  and they said, 'Moses suffered to write a bill of divorce, and to put away.'

⁵  And Jesus answering said to them, 'For the stiffness of your heart he wrote you this command,

⁶  but from the beginning of the creation, a male and a female God did make them;

⁷  on this account shall a man leave his father and mother, and shall cleave unto his wife,

⁸  and they shall be -- the two -- for one flesh; so that they are no more two, but one flesh;